ActiveMQ is a powerful yet easy to use open source message broker developed in Java. It is used to automate all kinds of communication between apps today. ActiveMQ can send messages in different formats along with providing you useful dashboards to get a birds eye view on who got which message!
Whether your systems are built on monolith or Microservice based architecture, you need you data moving from one point to another and in good time. ActiveMQ does the job. ActiveMQ is like central hub where you send messages from all your applications, and the recipients pickup the messages, and process them. ActiveMQ can be compared to something like the Hub and Spoke model. Like a post-office it takes in, organizes, and delivers messages.